Cold storage lighting systems are designed to address the need for delivering consistent performance at low ambient temperatures. A cold storage facility is a building or portion of a building or structure where a low ambient temperature is maintained to promote extended shelf life of products or commodities. Depending on the range at which the interior temperature is held, cold storage facilities can be categorized into coolers (positive chambers) that store products at temperatures above 0 °C (32°F) and freezers (negative chambers) that store products at temperatures under the freezing point. Further divisions of negative chambers include chill coolers (-4° to 0 °C or 25° to 32 °F), holding freezers (-29° to -4 °C or -20 to 25 °F), and blast freezers (-29° to -46 °C or -20° to -50 °F). As with other types of warehouses, cold storage facilities are a major component of any business logistics system and a part of the manufacturing infrastructure for food processing plants and other industries that involve production or processing of products or materials sensitive to temperature changes.